Recovery of vanadium from spent catalysts and alumina residues

Ho, Elizabeth; Kyle, J.; Lallenec, S.; Muir, D.M.; Parker, Alan

doi:10.1007/978-94-011-1214-7_76

Cited by 16 publications

(4 citation statements)

References 15 publications

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“…For a pulp density of 50 g/L, a recovery of 21.5% was observed. Under the same process conditions, Ho et al (1994) obtained Mo recoveries of 78.6% to 42.6% for pulp densities of 5 g/L to 50 g/L. It can be verified from the data in Table 2 that, regardless of the pulp density, the same percentages of V and Al were removed from the solid matrix.…”

Section: Indirect Microbial Leachingmentioning

confidence: 52%

BIOLEACHING OF METALS FROM A SPENT DIESEL HYDRODESULFURIZATION CATALYST EMPLOYING Acidithiobacillus thiooxidans FG-01

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Sérvulo

Costa

et al. 2017

Braz. J. Chem. Eng.

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-This study evaluates the recovery of heavy metals employing a spent catalyst from the hydrodesulfurization (HDS) of diesel, with no chemical, thermal or physical pretreatment, using the bacterial strain Acidithiobacillus thiooxidans FG-01. Direct and indirect bioleaching tests were carried out in Erlenmeyer flasks (500 mL). The influence of the pulp density and supplementation with elemental sulfur on the bioleaching were also investigated. The spent catalyst contained organochlorines, petroleum hydrocarbons and heavy metals in its composition. The best recovery results (26% Al, 26% V and 39% Mo) were achieved in the two-stage (indirect) bioprocess, with a pulp density of 50 g/L. It was not possible to recover Co, Cu and Ni (< 5%) under any of the conditions tested. The bacterial strain A. thiooxidans FG-01 was found to be a promising candidate for the recovery of Al, V and Mo using the crude spent HDS catalyst.

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Section: Indirect Microbial Leachingmentioning

confidence: 52%

BIOLEACHING OF METALS FROM A SPENT DIESEL HYDRODESULFURIZATION CATALYST EMPLOYING Acidithiobacillus thiooxidans FG-01

Ferreira

Sérvulo

Costa

et al. 2017

Braz. J. Chem. Eng.

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“…In terms of chemical reactants, it is a highly costly process. Sulfuric acid does not dissolve silica, it is still an effective method in recovering nickel and vanadium together, but the selectivity is weaker than alkali leaching (Ho et al, 1994). Navarro et al (2007) studied the selective recovery of vanadium from oil fly ash from power plants.…”

Section: Metal Recovery Techniques From Petrochemical Wastesmentioning

confidence: 99%

A review of metal recovery from spent petroleum catalysts and ash

et al. 2015

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“…2:5 and this presumably due to acid consumption by Al 2 O 3 present in the catalyst sample. 18) At these pH values, the high catalyst loading results in higher V concentrations and increasing precipitation. It is possible that this solid vanadium phase occludes or co-precipitates Mo.…”

Section: Effect Of Reaction Timementioning

confidence: 99%

Metal Leaching from Spent Petroleum Catalyst by Acidophilic Bacteria in Presence of Pyrite

et al. 2008

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This paper describes studies on the recovery of metals from spent hydro-processing catalyst using mixed acidophilic culture in presence of pyrite. This culture was initially grown in the 9KÀ medium (absence of 9 g/L Fe(II)) where ferrous sulphate (FeSO 4 ) was replaced by pyrite, and then applied in this bioleaching study. Bacterial action on pyrite catalysed the formation of ferric ion (Fe þ3 ), proton (H þ ) and sulphate ions (SO 4 À2 ) in the solution which leached metals (Ni, Mo and V) from the spent catalyst. Experiments were conducted by varying the reaction time, amount of spent catalyst and pyrite, and temperature. After 7 days with 30 g/L of spent catalyst and 50 g/L of pyrite, the leaching of Ni, V and Mo into the solution was 85, 92 and 26%, respectively. With increasing spent catalyst loading, the extent of metal dissolution was decreased, probably due to the precipitation of Fe þ3 as a residue. Under all conditions tested, Mo showed recovery due to its precipitation with leach residues as MoO 3 observed by applying EDAX and XRD techniques to the leach residues.

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Recovery of vanadium from spent catalysts and alumina residues

Cited by 16 publications

References 15 publications

BIOLEACHING OF METALS FROM A SPENT DIESEL HYDRODESULFURIZATION CATALYST EMPLOYING Acidithiobacillus thiooxidans FG-01

BIOLEACHING OF METALS FROM A SPENT DIESEL HYDRODESULFURIZATION CATALYST EMPLOYING Acidithiobacillus thiooxidans FG-01

A review of metal recovery from spent petroleum catalysts and ash

Metal Leaching from Spent Petroleum Catalyst by Acidophilic Bacteria in Presence of Pyrite

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